I'd really appreciate it if someone could help me with these questions. I've only just took up Biology so it's all a but daunting at the moment. Thanks in advance for any help.

1)Why is fat used for long term energy storage, especially in animals?

Ans; maybe cos they insulate and form membranes?

2 A) Describe how you would test for milk for the presence of fat? B) What observation indicates a positive result?

Ans; Would this be putting milk on brown paper, then on radiator and if it presents A perm stain it contains fat.

3) Water is a (good absorber of energy) which helps it to maintain a ( stable temperature). This affects entire ( organisms) and ( metabolic reactions)

3a Explain the words in the brackets.

Ans; good absorber of energy - it is slow to heat up and slow to cool down. Stable temperature -the high water content of organisms helps to keep their temperature stable Organisms - living things Metabolic reactions - the sum of all chemical reactions in an organism.

3b in what way are 'entire organisms' and ' metabolic reactions ' affected by water being a good absorber of energy?

Ans; Not sure on this one.

4. Say whether the following statements are true or false. In the case of a false statement, give a reason why it is false.

a) Carbohydrates contain hydrogen and oxygen in the same ratio as water ( H20).b) Amino acids do not contain nitrogenc) Fish is a good source of protein and lipid,but not carbohydrate.d) Keratin is a protein found in egg whitee) Amino acids are required to make fatty acidsf) The biuret test indicates the presence of proteinsg) Chewing food is an example of anabolism

A) False in carbohydrate there is always twice as much hydrogen as oxygen B)f they contain nitrogen C)?D) TrueE) TrueF)TrueG)?

5. Name two minerals required by the human bodyAns; Water and Sodium

In the case of these minerals state it's function in the body.

Ans; Water- good absorber of heat in the body Sodium- they play a role in forming cell and body fluids - tears , saliva and the liquid part of blood all contain sodium.

These are terrible questions - whoever wrote them hasn't thought them through.

There are a bunch of possible answers to the first one, but yours isn't.

The second one looks fine.

The third one - that property of water affects aquatic ecosystems, but in anything but very large organisms, it's pretty irrelevant.

4 - a only applies to simple carbs, but who knows what they're looking for? b is right, c you can look up, d you need to double-check, e depends on how bizarrely you interpret the question, but could be true or false, f you've got, and g you can look up

5 - make sure you know what a mineral is, and you've given locations for sodium but not a function.

3. a high heat capacity; doesn't change much; b on the microscale the water may buffer changes in temperature due to exo-/endothermic reactions

4.a as long as we are not talking about some aminosugars, it's trueb definitely not true! Why? That's like saying Car does not have wheels. If not, why?c I guess yes (you're not answering that at all)d F Why? Because it's not expressed there. (but it's not in membrane either )e sure, the amino acids are required to build proteins which catalyze the biosynthesis of fatty acids